SG63565A1 - Hub type optical disk and injection molding die for molding its disk substrate - Google Patents

Hub type optical disk and injection molding die for molding its disk substrate

Info

Publication number
SG63565A1
SG63565A1 SG1996002661A SG1996002661A SG63565A1 SG 63565 A1 SG63565 A1 SG 63565A1 SG 1996002661 A SG1996002661 A SG 1996002661A SG 1996002661 A SG1996002661 A SG 1996002661A SG 63565 A1 SG63565 A1 SG 63565A1
Authority
SG
Singapore
Prior art keywords
type optical
disk
hub type
injection molding
optical disk
Prior art date
Application number
SG1996002661A
Inventor
Yoshikazu Goto
Teruyuki Takizawa
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of SG63565A1 publication Critical patent/SG63565A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • G11B23/0028—Details
    • G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
SG1996002661A 1992-04-13 1993-04-08 Hub type optical disk and injection molding die for molding its disk substrate SG63565A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4092534A JP2616529B2 (en) 1992-04-13 1992-04-13 Injection mold for disk with hub, disk cartridge and disk substrate

Publications (1)

Publication Number Publication Date
SG63565A1 true SG63565A1 (en) 1999-03-30

Family

ID=14057035

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996002661A SG63565A1 (en) 1992-04-13 1993-04-08 Hub type optical disk and injection molding die for molding its disk substrate

Country Status (5)

Country Link
EP (1) EP0566032B1 (en)
JP (1) JP2616529B2 (en)
KR (1) KR0167797B1 (en)
DE (1) DE69317065T2 (en)
SG (1) SG63565A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5671210A (en) * 1995-02-15 1997-09-23 Matsushita Electric Industrial Co., Ltd. Magnet type clamping mechanism and disc driving apparatus using the same
JP2661884B2 (en) * 1995-03-31 1997-10-08 東芝イーエムアイ株式会社 Method and apparatus for manufacturing bonded disk
JPH1040578A (en) * 1996-07-23 1998-02-13 Mitsubishi Chem Corp Substrate for disk
US5946286A (en) * 1997-03-20 1999-08-31 Imation Corp. Customized graphics for dual layer optical discs
US6154441A (en) * 1997-04-17 2000-11-28 Imation Corp. Method for centering a hub in an optical disc, and an optical storage system using such disc
US6002663A (en) 1997-04-17 1999-12-14 Imation Corp. Hubless optical disc having low radial runout and method of manufacture
GB2340654A (en) * 1997-06-03 2000-02-23 Seagate Technology Optical disc for optical storage system
US6139307A (en) * 1998-07-23 2000-10-31 Imation Corp. Assembly for molding optical data storage disks formatted on both sides
US6678238B1 (en) 1999-12-29 2004-01-13 Imation Corp. Mold for manufacturing double-sided disk shaped articles for storing data
US6495235B2 (en) * 2000-03-24 2002-12-17 Matsushita Electric Industrial Co., Ltd. Optical disk, substrate of the same, and mold for forming the substrate
JP3528818B2 (en) 2000-12-27 2004-05-24 トヨタ自動車株式会社 Airbag device
TWI234765B (en) * 2001-03-29 2005-06-21 Matsushita Electric Ind Co Ltd Rotor assembly, information-recording/-reproducing device and method of assembling the rotor assembly
KR100446732B1 (en) * 2002-02-06 2004-09-01 엘지전자 주식회사 Disk, turn table
US7757247B2 (en) 2004-12-08 2010-07-13 Electronics And Telecommunications Research Institute Small form factor optical/magnetic disk for information storage
KR100701126B1 (en) * 2004-12-08 2007-03-28 한국전자통신연구원 Small form factor optic/magnetic disk for data storage
JP4561539B2 (en) * 2005-08-30 2010-10-13 Ｔｄｋ株式会社 Optical recording medium manufacturing method, manufacturing apparatus, and optical recording medium

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1176481A (en) * 1966-09-07 1970-01-01 Zonal Film Magnetic Coatings L Magnetic Disk Packs
JPS6028041B2 (en) * 1979-08-30 1985-07-02 パイオニア株式会社 Manufacturing method for signal recording disc
JPS60147962A (en) * 1984-01-10 1985-08-05 Toshiba Corp Floppy disk device
JPS6148143A (en) * 1984-08-13 1986-03-08 Hitachi Ltd Optical disc
JPH0634323B2 (en) * 1985-09-25 1994-05-02 ソニー株式会社 Disco Cartridge
JPS63122955U (en) * 1987-02-02 1988-08-10
JPS6414747A (en) * 1987-07-08 1989-01-18 Seiko Epson Corp Disk hub fitting device
EP0386971A1 (en) * 1989-03-06 1990-09-12 Hitachi Maxell Ltd. Method of producing optical disk, jig for carrying out the method, and optical disk produced by the method
JP2747925B2 (en) * 1989-06-02 1998-05-06 三菱レイヨン株式会社 Method of forming optical memory disk hub
JPH03230381A (en) * 1990-02-02 1991-10-14 Ricoh Co Ltd Substrate for optical information recording medium

Also Published As

Publication number Publication date
EP0566032A2 (en) 1993-10-20
DE69317065T2 (en) 1998-06-18
JP2616529B2 (en) 1997-06-04
EP0566032B1 (en) 1998-02-25
KR930022346A (en) 1993-11-23
JPH064907A (en) 1994-01-14
EP0566032A3 (en) 1994-08-24
DE69317065D1 (en) 1998-04-02
KR0167797B1 (en) 1999-03-20

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